Safety utility knife



FIG. 1 is a perspective view of safety utility knife showing my newdesign;

FIG. 2 is a plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a bottom view thereof.

The ornamental design for safety utility knife, as shown and described.